Jump to content
43oh

Search the Community

Showing results for tags 'ADC'.

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


Forums

  • News
    • Announcements
    • Suggestions
    • New users say Hi!
  • Spotlight!
    • Sponsor Spotlight
    • Sponsor Giveaways
  • Energia
    • Energia - MSP
    • Energia - TivaC/CC3XXX
    • Energia - C2000
    • Energia Libraries
  • MSP Technical Forums
    • General
    • Compilers and IDEs
    • Development Kits
    • Programmers and Debuggers
    • Code vault
    • Projects
    • Booster Packs
    • Energia
  • Tiva-C, Hercules, CCXXXX ARM Technical Forums
    • General
    • SensorTag
    • Tiva-C, Hercules, CC3XXX Launchpad Booster Packs
    • Code Vault
    • Projects
    • Compilers and IDEs
    • Development Kits and Custom Boards
  • Beagle ARM Cortex A8 Technical Forums
    • General
    • Code Snippets and Scripts
    • Cases, Capes and Plugin Boards
    • Projects
  • General Electronics Forum
    • General Electronics
    • Other Microcontrollers
  • Connect
    • Embedded Systems/Test Equipment Deals
    • Buy, Trade and Sell
    • The 43oh Store
    • Community Projects
    • Fireside Chat
  • C2000 Technical Forums
    • General
    • Development Kits
    • Code Vault
    • Projects
    • BoosterPacks

Calendars

There are no results to display.


Find results in...

Find results that contain...


Date Created

  • Start

    End


Last Updated

  • Start

    End


Filter by number of...

Joined

  • Start

    End


Group


Website URL


Location


Interests


Sparkfun


Github

  1. This is a project I completed for my Embedded Systems final at John Brown University. For this project, I wired and programmed an Arduino Uno using other parts ordered off of Adafruit to design LED lights that respond to sound. In this post, I will include my final report which documents the methods and results to this project. Final_Project_Report.docx
  2. Hi, I wrote an article (in Portuguese) about how to use the SD16 ADC of MSP43F2013, and to show one practical application I transformed the MSP430F2013 in an I2C 16-bit ADC, similar to ADS1115. In the example, I read the data using one Arduino Nano. Comparing the conversion of SD16 and ADS1115: More details about the project can be found in my Github: https://github.com/agaelema/msp430f20x3_as_i2c_16bit_adc The project is open to further improvements/optimizations and functions.
  3. When using analog read function, ADC never gives 0 value even when it is directly connected to the ground. But when I connect it to 3.3V it gives constant 4095 value. What is the problem?
  4. I would like to measure the voltage of a NiMH DC battery not exceeding 12V and I just knew that msp430g2553's ADC has an internal voltage divider. Is it appropriate to use the internal voltage divider directly without any external circuit?
  5. I'm using the FRC Gamepad Tool to load the TI-supplied firmware for a USD HID joystick with a KMA210 magnetic angle sensor. I have a voltage divider taking the KMA210's 5V max output to 3.3V, and when plugging in the MSP and checking the windows game controllers, an axis does respond when I turn a magnet near the sensor, but the reading is all over the place. Bouncing back and forth by 40% of the whole angle range. I've tried using an external 5V supply, tried changing the sampling on the ADC, the Vref, the clock multiplier, the wires, the input pin, just about everything. Does anyone ha
  6. Hello, I recently ported over an Energia sketch that had working WiFi functionality in order to help with remote logging for a project I'm working on. The WiFi works well, but now the CCS code that was handling the ADC interrupts and measuring data is no longer functioning. If possible, I would like to make minimal changes to the CCS code as it was working exactly as we desired. I feel like there must be a relatively simple fix that I'm missing but I can't seem to figure it out. Can someone please help figure out what's wrong the ADC interrupt in the following code? #include <st
  7. I am currently trying to read a couple of parameters from onboard sensrs on TelosB, then print out on monitor which I am using PuTTY. However, I am not getting any values here. Please could some on hlep me out? I attached my code and corresponding datasheets too THank you 00std_temp.c msp430f1611.pdf telosMote.pdf
  8. Hi, These after read this thread about how to use temperature calibration data, I tried to use TLV register to obtain the "real" voltage reference value and increase the ADC conversion by compensating the gain and offset. The test was performed in a Launchpad EXP430FR6989, but can be applied to other launchpads compatible with MSP430Ware driverlib. The increase in the accuracy is very interesting. in the table (sorry by the comma instead of point, brazilian notation). HP 3478A - value measured with DMM ADC_correct1 - value measured with MSP430 without any correc
  9. JStat60

    Noise in ADC

    Hi, I have a non-profit (Smoky Mountain Scientific, smokymtsci.com) that develops and sells low cost instruments for science education. One of our instruments incorporates a Tiva-C launchpad that outputs a pwm voltage and measures voltage and current passed in electrochemical reactions. I recently purchased a fairly large batch of Tiva launchpads from Mouser and I am having trouble with noise in the analog read channels for about 1/4th of the boards. We have been building and selling these instruments for a couple of years now and have never had this problem before. To test the boards, I
  10. So, this is partly for me, and partly for others who need a refresher, or just do not know how. But I will be making several post here over time on how to write very simply code, to do one thing, or another. These, used in conjunction with a shell script could be very useful / flexible. After several long talks with many people, including some here on these very forums. I've decided that using C, to communicate with hardware, or hardware interfaces is best as can be for many situations. However, when you need to run several tools all at once, and have output formatted in some fashion, or easil
  11. Hello fellows, I need some help, with a situation, I want convert some analog signals to digital and send him by the UART communication, but I dont get how to solve this problem. my digital values is represented by "tempADC" variable, soo how can I get a buffer with values to the pc with UART communication. I try many things, but i dont understand how to put my output signal in the terminal in this format. temperature: 40º temperature: 41º temperature: 42º temperature: 43º can anyone help me?! my code: #include "uart_Tx.h" #include "stdio.h" void UART_TxConfig
  12. Hi All, I am working on a project using the CC1310 LaunchPad, and it will be powered directly from a 3V (nominally) battery. I want to use the ADC to accurately read the voltage from one of my sensors, and the problem that I am having is that the reference seems to be relating to the voltage the LaunchPad is running from. I have tried using analogReference(), but it wont compile with the parameter INTERNAL1V5, and when i try INTERNAL2V5 it does compile, but it still seems to be using the battery voltage as the ADC reference. Please can someone explain how I can get a stable vol
  13. Hello, We are planning to do work on CC3200MOD LaunchpadXL. So, CC3200 GPIO/UART/ADC Energia IDE based header files can compatible in CC3200MOD? I also some confusion regarding Energia IDE based header file.Please mention below description. If you see pin_energia.h file in one array initialize for CC3200 LaunchXL like this, const uint16_t digital_pin_to_pin_num[] = { NOT_A_PIN, /* dummy */ NOT_A_PIN, /* 1 - 3.3V */ PIN_58, /* 2 - GPIO_03 */ <- pins_energia.h (CC3200) *Note : In CC3200MOD PIN_58 = GND PIN_04, /* 3 - GPIO_
  14. I am using the current sensor HO 10-P with my TM4C123 launchpad board. Essentially I have to connect the Vout pin to a GPIO, configure the GPIO as an ADC pin and then configure the ADC controller to read the Vout from the sensor. I will connect the Vout to PE2 (which is AIN2 and also a GPIO). Wondering how to configure this GPIO as an ADC and then read it? Can you show a sample code snippet?
  15. Hello all, I've been able to get the chatserver example to work. I did some modifications on it and I'm now printing data from adc when client connects. I was wondering if I can save the data from the adc in a file using a telnet command. I mean, as soon as the adc starts reading I'd like to send some kind of telnet or whatever command to save this into a file. I read about some telnet commands like: "telnet ip -f file_location" or even "telnet ip port >> file_location", but I don't know how to implement this at the end of the adc conversion. I mean, can I just do: client.write(
  16. I am using this current sensor in my project. The Vout pin needs to be connected to the ADC. The best way to do this is to connect it to some analog pin and tie that analog pin to ADC through the code. Anything else? Can you refer to a sample code for this?
  17. Hi, I'm new to MSP430, I'm using a MSP430G2553 in a project and need help with an in depth understanding of programming the ADC10 inputs of the MCU. I'm using a potentiometer in order to light one of 3 LEDs. For example, LED1 lights up when input voltage is 1V or less, LED2 lights up between 1V and 2V and LED3 lights up when the input voltage is greater than or equal to 2V. I have attached my code below but I am not clear on how to read, convert and store a voltage so that I can use the IF statements to light the respective LEDs. #include <msp430g2553.h> void indicator_LED
  18. Hi, I want to use all of the 24 analog input channels of the MSP432P401R Launch Pad and print it serial. It works realy good for 23 of the 24 input channels, but only Pin 5.3 (ADC14INCH_2) doesn
  19. I'm using a Tiva C series launchpad (TM4C123G) to sample analog data using an external ADC (ADC0804). The ADC is clocked at 1.4MHz. The SysCtlClockSet command was used to set clock freq to 80MHz. A square wave is being generated on a pin, with a frequency same as the sampling rate, using the code given below. So this gives us the sampling rate on an oscilloscope. For some reason the sampling rate is TOO low. It is only ~330KHz with NO command in the loop. It drops to about ~280KHz with one digitalRead and to just a few hundred Hz with a SerialPrintln(). What is causing it to run so slow
  20. MSP432P401R, Energia 16, Windows 7 64-bit Hi, I am using MSP432 in Energia and my analog input can only take a value between 0 and 1023 (10 bit) but the ADC should be 14 bit. How do I change this? In the MSP432 user manual table 20-1 shows different ADC14 Conversion Result Formats but I am struggling to convert this into Energia code. Thanks1
  21. The MCP3008 is an easily used 10bit, 8 channel, Serial Peripheral Interface (SPI) Analog to Digital Converter. I created an Energia library that can be found here and used to read any of the eight pins with a single call. Conversion is done for voltages between 0 and 3.3 V, including on the CC3200, and results in a integer reading between 0 and 1023. This library is for single ended operation only and uses hardware SPI. An example is included that demonstrates reading from all 8 channels. Tested with Energia 0101E0016 on the following LaunchPads * CC3200-LAUNCHXL Rev 4.1 (80 MH
  22. Hi guys, this forum have already helped me a lot, but I never needed to make a post. So, here I am I am using the MSP432 LaunchPad with CC3100. I could not find useful examples to use the CC3100 on CCS, so I decide to use Energia. What I need to do is get some analog data, convert it to digital and send it through the TCP/IP protocol. So far, everything is working fine, the problem is that I need the ADC sample rate be around 1kHz and I could not find where I can change it or verify it. Do you guys know what is the default ADC sample rate for MSP432? Also, I am using ADC with
  23. Hello everyone, I have a problem with Energia and my MSP430F5529, this micro is enable to use 12bits ADC, but I can't find the way to make it enable that configuration because Energia runs my code in default 10bits ADC, some one can tell me how can I configure the ADC to use 12 bits resolution??, this is my code: #include <Servo.h> Servo servo; int potpin = 23; int volt, i; void setup() { servo.attach(19); } void loop() { volt=analogRead(potpin); i=volt/6; //I'ms using 6, because 1023/6 = aprox ? 180 steps
  24. Hello, I am trying to measure voltage across a voltage diviter with a Tiva-C series boards, and I am consistently getting mis results. I get 0-4096 for 0 to 3.3V. I also have a seperate battery, that goes in to a 100K + 15K voltage divider network and PE_2 is connected to the middle of the voltage divider. It measures 1.1V approximately, when it should be measuring 0.77V. But here is the interesting part. When I use a multimeter to measure the same middle point in the voltage divider, it reads 0.77, and the value from the analog read also converges to 0.77 - then i disconnect the m
  25. Hi, I am trying to get the ADC sample timestamp on Energia, but I can not figure it out how it works. From the TI API I know that the ADC data saved on the register is made by two parts. bits [13:0] : ADC sample bits [31:14]: time stamp per ADC sample So I took the Energia library. From <driverlib/adc.h> and I found a method that returns only the time stamp. //***************************************************************************** // //! Gets the current value of ADC internal timer //! //! \param ulBase is the base address of the ADC //! //! This function the c
×
×
  • Create New...